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3 years ago

The probability distribution histogram shows the length distribution of lizards in the reptile collection at a zoo.

Mathematics

1 answer:

LuckyWell [14K]3 years ago

3 0

Try looking at this and see if it helps http://openstudy.com/updates/580662f4e4b0d88e39fc9a0e

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Beth has 30 days to train for the Olympics. She swims 20 laps on the first day, then each day after that she swims two more laps

hjlf

Wait, what’s the question?

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3 years ago

Trying to write an equation for line on graph without any numbers given to plug into for slope

umka2103 [35]

In that situation, you use the information you DO have. It's not always
enough to do the job. But often it is, and in that case, you use what you
do have to answer the question or solve the problem.

Sadly, I can't be any more specific than that. You haven't told us what
information you do have ... only what information you don't have.

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3 years ago

In a random sample of 8 people, the mean commute time to work was 33.5 minutes and the standard deviation was 7.2 minutes. A 95

Elina [12.6K]

Answer: Margin of error = 6.58

Confidence interval = (26.91, 40.08)

Step-by-step explanation:

Since we have given that

Sample size n = 8

Sample mean = 33.5 minutes

Population standard deviation = 9.5 minutes

At 95% confidence interval,

α = 0.05

t = 1.96

So, Margin of error is given by

$t\times \dfrac{\sigma}{\sqrt{n}}\\\\=1.96\times \dfrac{9.5}{\sqrt{8}}\\\\=6.58$

Confidence interval would be

Lower limit:

$\bar{x}-6.58\\\\=33.5-6.58\\\\=26.91$

Upper limit:

$\bar{x}+6.58\\\\=33.5+6.58\\\\=40.08$

Hence, the interval would be (26.91, 40.08)

But at standard deviation 7.2 minutes, the confidence interval was (27.5, 39.5)

Confidence interval using the standard normal distribution is wider than the confidence interval using t distribution.

3 0

2 years ago

Which equation represents a nonproportional relationship? Which equation represents a nonproportional relationship? A y = 5x B y

kolbaska11 [484]

Answer:

y = 5x + 3 is a nonproportional relationship.

Step-by-step explanation:

We need to find the equation that represents a nonproportional relationship.

If y is directly proportional to x, it would mean that,

y ∝ x

y = kx

Option (b) shows the equation of a line i.e. y=mx+x, where m is slope and x is y-intercept.

Hence, we can say that option (b) represents a nonproportional relationship.

7 0

2 years ago

Read 2 more answers

Find the greatest common factor of 28x^2 16x

Aleks04 [339]

4x (7x +4). The greatest factor is 4x because it comes out of both.

6 0

2 years ago